Improvement in saw-frames



W. HANKI N. Sr.

Improvement in Saw-Frames.

No.133,027. Patented Nov.12,1872.

AM. PHOIO-LITHUGRAPHICCQMX (OSBORNES PROCESS) UNITED STATES PATENTCrrrca YVILLIAM HANKIN, SR, OF HAWLEY, PENNSYLVANIA.

IMPROVEMENT IN SAW-FRAMES.

Specification forming part of Letters Patent No. 133,027, dated November12, 1872.

To all whom it may concern:

Be it known that I, WILLIAM HANKIN, Six, of Hawley, in the county ofWayne and State of Pennsylvania, have invented a new and usefulImprovement in Saw-Frames; and I do hereby declare the following to be afull, clear, and exact description thereof, which will enable thoseskilled in the art to make and use the same, reference being bad to theaccompanyin g drawing forming part of this specification, in whichdrawing Figure 1 represents a sectional front view of my saw-frame. Fig.2 is a sectional view of my diagonal thrust-brace detached, in a largerscale than the previous figure.

Similar letters indicate corresponding parts.

This invention relates to an improvement on a buck-saw frame, which Ihave described in a patent granted to me October 24, 1871,

No. 120,157 said improvement consisting in the arrangement of a round orcylindrical bar passing in adiagonal direction through the thrust-braceof a buck-saw frame, the ends of the round bar being received in socketsformed in the side pieces of the saw-frame in such a manner that saidsockets, and also the channel in the thrust-brace for the reception ofthe diagonal bar, can be produced by an ordinary auger, and thereby theconstruction of the com.- pound thrust-brace is materially simplified,and at the same time a firm, durable, and effective thrust-brace isobtained.

In the drawing, the letter A designates a buck-saw frame, which consistsof the side pieces.B B, the thrust-brace O, and the tightener D. Withthe ordinary thrust-brace O I have combined a diagonal brace, E, whichconsists of a cylindrical rod, the ends of which are received incylindrical sockets a a bored in the end pieces B B of the saw-frame,while the thrust-brace G is provided with around oblique hole orchannel, b, through which the rod E passes, as shown particularly inFig. 2.

By using a rod of cylindrical cross-section for the diagonal brace I amenabled to produce the sockets a a and the channel b by means of acommon auger, and it requires but little time to insert said diagonalbrace in its proper position; Whereas compound thrustbraces, such asdescribed in my patent No. 120,157, are expensive, and it requiresconsiderable time to attach them in the proper position between the sidepieces of the frame.

I am aware that compound thrust-braces have heretofore been used besidesthat described in my above-named patent, such as those described in thepatent of D. and E. Moore, No. 94,500, and reissue No. 4,276, and alsoin the patent of John G. Baker, N 0. 112,007 but all such braces aremore expensive, and in some respects less durable and less eifectivethan that which forms the subject-matter of my present application.

I do not claim broadly a compound thrustgrace in combination with abuck-saw frame;

What I claim as new, and desire to secure by Letters Patent, is-

The arrangement of a cylindrical diagonal brace, E, passing through acylindrical channel in the thrust-brace G, and dropping into cylindricalsockets in the side pieces of a bucksaw frame, all as herein shown anddescribed.

WILLIAM HANKIN, SR.

Witnesses:

WM. H. HANKINS, J r., B. E. SMITH.

